{"id":"65a5383414f678f813f899b141807a0f499d67a5335c8a41bf30950f715198d0","type":"challenge","from_addr":"poa1HuVybXzZpCqEMbNCw7TdsSSGRD7wg8BTThQA8wsVgk2D","to_addr":"","amount":"","epoch":10,"ts":1792714324,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"3c70489f1f704c0b","answer":"Each new identity must finish a verifiable, memory-bound puzzle before earning. Route challenges into randomly salted queues named terrace, river and willow, and bind each proof to one public key and epoch so it cannot be reused. Set the puzzle cost near a day's expected reward and cap rewards until seven daily proofs accumulate. An attacker running 1,000 identities must pay for 1,000 independent puzzle streams before collecting, making a flood costly.","stamp":7,"from":"poa1HuVybXzZpCqEMbNCw7TdsSSGRD7wg8BTThQA8wsVgk2D","nonce":2,"parents":["3bba6541516bd1571883a8a3df1c1988ba42a4fcb22062caeb99982043ab213a","86fd297176ef2de6753817fb00e08197c2b315239aaa0d43a61dc71a28f88ba1"],"ts":1792714324,"cid":"poa-mainnet-1","sig":"GJ4RTMbKtijRGLehEWAtshn6xw4SsEm66hLHbjnKgJjrArKKazfAnVHXAgVMNiujxzGd41ckgkVJf7Va4fS6xXb"},"checkpointed":{"height":35810,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T05:47:44.483Z","checkpoint_height":35810,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}